MPC ONE SD Card Project Full when card is empty

Greetings, I am a new user to the MPC ONE. I started a new project stored in a 125GB SD Card and although there's tons of room on the SD Card, I am getting a "memory almost full" warning and eventually the project stopped saving and I was unable to add effects from a lack of memory. I backed up the SD Card and left just that .xpj and project folder on it and it still pops up a memory warning. I tried renaming it and a factory reset but the memory is still almost full on the SD. Any ideas how to fix this? Thanks for your help!

Storage is not the same as memory (ram). You load from storage into memory, then save your project back to storage when you are done. Your MPC One has around 1GB of ram for everything in active project memory. You've exceed that, so you need to learn about deleting unused programs, purging unused samples and general sample management (using non destructive chopping and editing, mono vs stereo, using lower memory instruments and plugins, avoiding many excessively long audio tracks etc). Have a search around the forum for existing topics and let us know if you need any further help.